I have owned this vehicle for nearly 20 years so I know it pretty well. For the last two the engine light is on almost continuously, and the only fault is unwarranted revving of the engine at traffic lights. This can be controlled by playing with the clutch as it's the basic manual model built for the European market with the 2.3 litre engine. In spite of its age it has not yet completed 100,000 miles and has been well treated. I suspect a faulty Engine Management Unit but I should like advice of other possible factors. Is the EMU or ECU the same on the 2.3 as the other American models, the 3.1 and 3.8 ?